The one on your ticket looks legit, but I'm sure it's facsimile right?
The ones on the other items look labored. Looks like someone tried really hard to make the signature look real, and they did a pretty good job of it, but the line at the end of manning is over-exaggerated.
Now, i'm not an "expert", but I've been in the sports card and memorabilia collecting hobby for about 10 years, and I've never seen peyton's auto look like that.
He rarely signs his name linearly, it's always Peyton on top and Manning aligned with the stem of the P in peyton.
As far as my knowledge goes back, this is how he's always signed...
I honestly hope that these items are authentic, because I have seen very few things signed while he was in College, and they are great bragging rights collectors items.
Good luck bro